#!/usr/bin/evn  python
#coding:utf-8

# + - * /
# **  幂运算
# %   求余数
# //  求商
# > <   >=  <=   ==  !=   not    and  or

# if else  while

number = 23
running = True

while running:
    a = int(raw_input("Input a integer:"))
    if number == a:
        running = False
        print "OK"
    elif number < a:
        print "number < a"
    elif number > a:
        print  "number23 > a"